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How to upgrade R in ubuntu? [closed]
...h the source from where the packages will be retrieved. For example:
deb https://cloud.r-project.org/bin/linux/ubuntu/ version/
Replace https://cloud.r-project.org with whatever mirror you would like to use, and replace
version/ with whatever version of Ubuntu you are using (eg, trusty/, xenial/...
iOS: Convert UTC NSDate to local Timezone
...romString to go the opposite way
Table of formatting string parameters:
https://waracle.com/iphone-nsdateformatter-date-formatting-table/
If performance is a priority, you may want to consider using strftime
https://developer.apple.com/legacy/library/documentation/Darwin/Reference/ManPages/man3...
Get Image size WITHOUT loading image into memory
... in order to identify a file type signature.
Relevant version of script:
https://raw.githubusercontent.com/scardine/image_size/master/get_image_size.py
[update]
Hmmm, unfortunately, when applied to jpegs, the above gives "'JPEG image data, EXIF standard 2.21'". No image size! – Alex Flint
...
How to reset or change the MySQL root password?
...keep your security standards.
sudo service mysql restart
For reference : https://dev.mysql.com/doc/refman/5.7/en/resetting-permissions.html
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Finding the source code for built-in Python functions?
...epository will no longer be updated:
Install Git if necessary.
git clone https://github.com/python/cpython.git
Code will checkout to a subdirectory called cpython -> cd cpython
Let's say we are looking for the definition of print()...
egrep --color=always -R 'print' | less -R
Aha! See Python/b...
When do I need to use Begin / End Blocks and the Go keyword in SQL Server?
...eUploader: {
brandingHtml: "Powered by \u003ca href=\"https://imgur.com/\"\u003e\u003csvg class=\"svg-icon\" width=\"50\" height=\"18\" viewBox=\"0 0 50 18\" fill=\"none\" xmlns=\"http://www.w3.org/2000/svg\"\u003e\u003cpath d=\"M46.1709 9.17788C46.1709 8.26454 46.2665 7.94324 4...
How to secure MongoDB with username and password
... to properly understand.
It's really simple. I'll dumb the following down https://docs.mongodb.com/manual/tutorial/enable-authentication/
If you want to learn more about what the roles actually do read more here: https://docs.mongodb.com/manual/reference/built-in-roles/
1) Start MongoDB without a...
Using the RUN instruction in a Dockerfile with 'source' does not work
...ll those in any packages you install.)
More detail in this answer below. https://stackoverflow.com/a/45087082/117471
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Cross-Origin Request Headers(CORS) with PHP headers
...l idea of what is involved. For the nitty-gritty low-down, read:
*
* - https://developer.mozilla.org/en/HTTP_access_control
* - http://www.w3.org/TR/cors/
*
*/
function cors() {
// Allow from any origin
if (isset($_SERVER['HTTP_ORIGIN'])) {
// Decide if the origin in $_SERVE...
Tips for debugging .htaccess rewrite rules
...er-agent$
#Here is the actual rule I am testing
RewriteCond %{HTTP_HOST} !^www\.domain\.com$ [NC]
RewriteRule ^ http://www.domain.com%{REQUEST_URI} [L,R=302]
If you are using Firefox, you can use the User Agent Switcher to create the fake user agent string and test.
2. Do not use 301 until ...